Find the Domain of the Function F and of Its $$f ( x ) = - 5 \cos ( 9 x )$$

question 59

Multiple Choice

Find the domain of the function f and of its inverse function f-1.
- $$f ( x ) = - 5 \cos ( 9 x )$$

• A) Domain of \(f : \left[ - \frac { 1 } { 9 } , \frac { 1 } { 9 } \right]\)
• Domain of \(\mathrm { f } ^ { - 1 } : ( \infty , \infty )\)
• B) Domain of \(\mathrm { f } : ( \infty , \infty )\)
• Domain of \(f ^ { - 1 } : [ - 5,5 ]\)
• C) Domain of f: \(( \infty , \infty )\)
• Domain of \(f ^ { - 1 } : [ - 9,9 ]\)
• D) Domain of \(\mathrm { f } : ( \infty , \infty )\)
• Domain of \(\mathrm { f } ^ { - 1 } : [ 4,14 ]\)

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